Keyboard of a mobile computing device



FIG. 1 is a frontal view of a keyboard of a mobile computing device;

FIG. 2 is a side view thereof;

FIG. 3 is an isometric view thereof; and,

FIG. 4 is an enlarged partial side view showing only a lower portion thereof.

The broken line showing of a computing device and additional keyboard row is included for the purpose of illustrating portions of the article and forms no part of the claimed design. 

The ornamental design for a keyboard of a mobile computing device, as shown and described. 